2022/4/12 悪用される可能性が高い マイクロソフト の脆弱性(RPCでのRCE)

CVE-2022-26809
MITRE CVE-2022-26809
CVSS:3.1 9.8 / 8.5
悪用可能性:悪用される可能性が高いです
2022/4/14時点で出来得る回避策
1.ファイアウォールで TCP ポート 445 をブロック
しかし、この回避策を適用しても、企業の境界内からの攻撃に対してはシステムが脆弱な可能性があります。
Windows Server の SMB トラフィックをセキュリティで保護する

この脆弱性により引き起こされうる攻撃
RPCでのRCE。この結果、サーバー側で、RPC サービスと同じアクセス許可を使用して、リモートでコードが実行される可能性があります。
対象製品は以下の通り。
Windows Server, version 20H2 (Server Core Installation)
Windows Server 2022 (Server Core installation)
Windows Server 2022
Windows Server 2019 (Server Core installation)
Windows Server 2019
Windows Server 2016 (Server Core installation)
Windows Server 2016
Windows Server 2012 R2 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 (Server Core installation)
Windows Server 2012
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows RT 8.1
Windows 8.1 for x64-based systems
Windows 8.1 for 32-bit systems
Windows 7 for x64-based Systems Service Pack 1
Windows 7 for 32-bit Systems Service Pack 1
Windows 11 for x64-based Systems
Windows 11 for ARM64-based Systems
Windows 10 for x64-based Systems
Windows 10 for 32-bit Systems
Windows 10 Version 21H2 for x64-based Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for 32-bit Systems
Windows 10 Version 21H1 for x64-based Systems
Windows 10 Version 21H1 for ARM64-based Systems
Windows 10 Version 21H1 for 32-bit Systems
Windows 10 Version 20H2 for x64-based Systems
Windows 10 Version 20H2 for ARM64-based Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows 10 Version 1909 for x64-based Systems
Windows 10 Version 1909 for ARM64-based Systems
Windows 10 Version 1909 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1607 for 32-bit Systems

引用
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-26809